Arsenic

мышьяк, As

мышьяк; мышьяковый

1. имя существительное мышьяк 2. прилагательное мышьяковый

I. noun Etymology: Middle English arsenik orpiment, from Anglo-French and Latin; Anglo-French, from Latin arsenicum, from Greek arsenikon, arrhenikon, from Syriac zarnīg, of Iranian origin; akin to Avestan zaranya gold, Sanskrit hari yellowish — more at yellow 1. a trivalent and pentavalent metalloid poisonous element that is commonly metallic steel gray, crystalline, and brittle and is used especially in wood preservatives, alloys, and semiconductors — see element table 2. a poisonous trioxide As₂O₃ or As₄O₆ of arsenic used especially as an insecticide or weed killer — called also arsenic trioxide II. adjective of, relating to, or containing arsenic especially with a valence of five